/*
 * Copyright 2022 NAVER Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.navercorp.pinpoint.plugin.spring.web.javax.interceptor;

import com.navercorp.pinpoint.common.util.StringUtils;

import javax.servlet.ServletRequest;

public class ServletRequestAttributeUtils {

    public static String extractAttribute(ServletRequest request, String[] keys) {
        for (String attributeName : keys) {
            Object uriMapping = request.getAttribute(attributeName);
            if (!(uriMapping instanceof String)) {
                continue;
            }

            if (StringUtils.hasLength((String) uriMapping)) {
                return (String) uriMapping;
            }
        }
        return null;
    }
}
